Solar energy for businesses is the use of solar power - generated onsite or contracted from offsite plants - to meet a company's electricity needs at a predictable, agreed cost. For commercial and industrial (C&I) buyers in India, the case rests on three outcomes: lower energy costs, long-term budget certainty as retail electricity tariffs continue to rise, and verifiable progress on decarbonisation commitments. Businesses can integrate solar through onsite rooftop systems, offsite open-access supply, or hybrid contracts that pair solar with wind and battery storage.
Solar energy for businesses refers to electricity generated from solar photovoltaic (PV) plants — installed on a company’s premises or contracted from offsite projects - and supplied to commercial and industrial operations, usually under long-term agreements that fix or stabilise the cost of every unit consumed.
Solar is no longer an experiment for Indian industry. India's installed solar capacity crossed 150 GW in March 2026, according to the Ministry of New and Renewable Energy (MNRE). The open-access segment that serves C&I consumers crossed 30 GW of cumulative capacity in 2025, with 7.8 GW added in that year alone. For a business exploring solar today, the question is less whether the model works and more which route fits its operations.
Electricity is one of the largest controllable operating costs in manufacturing. Retail tariffs charged by distribution companies (DISCOMs) to industrial and commercial consumers have risen steadily across most Indian states, and published tariff orders point to continued upward pressure. Every unit a business buys at a retail tariff is exposed to that trajectory.
Solar changes the shape of that exposure. When a business contracts solar power under a long-term agreement, it locks in a known cost for a defined share of its consumption - typically for 15 to 25 years. The bill becomes predictable, and budgeting becomes simpler.
The second driver is sustainability. Global customers, lenders, and supply-chain programmes increasingly ask businesses to demonstrate measurable decarbonisation. Because every solar unit consumed directly replaces a grid unit, solar energy is usually the fastest and most verifiable lever available to reduce Scope 2 emissions.
There is no single template. The right structure depends on how much power a business uses, when it uses it, what rooftop or land space it has, and how it prefers to deploy capital. Three routes dominate.
An industrial solar system installed on rooftops, carports, or vacant land within a facility supplies power directly to operations. It suits businesses with steady daytime consumption and available space, and the outcome is an immediate reduction in the number of units purchased from the grid.
For larger consumers - typically those with a connected load of 1 MW and above - industrial solar power systems located in high-resource regions can deliver power through the grid under green open-access regulations, in captive or third-party arrangements. The business does not host or operate anything; it receives contracted solar power at its existing connection. This route removes rooftop and land constraints and supports much larger volumes.
Solar generates during daytime hours. Businesses that want renewable power across more of the day increasingly contract hybrid supply, where solar is combined with wind generation and battery energy storage, engineered around the buyer’s load profile. Structured well, hybrid contracts can replace the large majority of a facility's annual consumption with green power.
Each route can be structured with or without capital investment. Under an ownership (CAPEX) model, the business funds and owns the asset. Under a power purchase agreement (PPA), an independent power producer finances, builds, owns, and operates the plant, and the business simply pays for the power it consumes. Most large C&I buyers in India choose long-term PPAs: there is no upfront investment, and performance risk sits with the producer.
Lower energy costs. As general market context - not any single project’s pricing - published industry analyses report that open-access solar routinely lands 20-40% below prevailing industrial grid tariffs in key states, after applicable open-access charges. Onsite solar often shows a larger per-unit difference because fewer charges apply.
Budget certainty. A long-term solar contract fixes the price trajectory of a defined share of consumption. While retail tariffs move with fuel costs and utility finances, contracted solar behaves like a hedge: the business knows what it will pay years in advance.
Credible decarbonisation. Solar consumption directly reduces Scope 2 emissions and supports commitments under RE100, science-based targets, and customer sustainability programmes - with generation data to evidence every claim.
Scalability. Contracts can be sized to today’s load and expanded as operations grow, so the energy strategy keeps pace with the business plan.
Resolven, a renewable energy platform in India that builds on the foundation established under Zelestra, supplies contracted green power to corporate customers.
Our Tamil Nadu C&I strategy is centered around a 140 MW co-located hybrid energy cluster, developed exclusively for industrial clients. The cluster includes two major clients - SPB and Daimler India along with TVS Group companies- with multiple phases under execution.
Zelestra India's C&I Hybrid Energy Portfolio - Tamil Nadu
Why It Matters For the Industry
For the Region
Resolven's Differentiated Approach
Businesses do not need to navigate this alone. Resolven's enterprise solutions team works with C&I stakeholders to structure supply models around actual load profiles - from single-site needs to multi-state hybrid portfolios.
Yes. Solar covers daytime consumption, and hybrid contracts that combine solar with wind and battery storage extend renewable supply into evening and night hours. The business contracts an outcome - a share of annual consumption served by green power - rather than managing generation itself.
No. Under a PPA model, the producer finances, builds, and operates the plant; the business pays only for the power it consumes.
Grid supply remains available at all times. Solar and hybrid contracts determine how many of the units a business consumes are green and contracted at a known cost - the reliability of the connection is unchanged, while the cost and carbon profile of the energy improve.
For most Indian businesses, solar energy for businesses is not a leap - it is the most mature, lowest-risk entry point into renewable procurement, and the fastest way to convert a rising, unpredictable cost line into a contracted one. The practical first step is an assessment of your load profile and the options your state’s regulations allow.
